Latest kernel 2.6.24-11 broke brightness control for Lenovo Thinkpad T/R/X 61

[Jerone Young]

There has been a bug introduced in the latest kernel update 2.6.24-11
that pervents brightness control working for Lenovo Thinkpads T/R/X 61
.. basically any new Thinkpad. Bug could use some fixing as it is a
major one, just introduced. Kernel 2.6.24-10 works perfrectly fine.

Bug can be found here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/198476